GJ 357 b
Orbiting GJ 357
GJ 357 b is an exoplanet orbiting the star GJ 357, discovered in 2019 using the Transit method. It is a Earth-sized world.
Radius
1.20
Earth radii
Mass (est.)
1.87
Earth masses
Orbital Period
3.9
days
Distance
9.4
parsecs
Equilibrium Temp
518
K
Radius (Earth radii)
1.20
Mass (Earth masses)
1.87
Estimated
Equilibrium Temperature
518 K
Orbital Period
3.93 days
Distance from Earth
9.4 pc (~31 ly)
Spectral Type
M2.5 V
Temperature
3505 K
Mass (Solar)
0.34 M☉
Radius (Solar)
0.34 R☉
Luminosity
Unknown
Planets in System
3
Stars in System
1
Coordinates (RA, Dec)
144.0075°, -21.6651°
Discovery Method
Transit
Discovery Year
2019
Source ID: GJ 357 b
GJ 357 b orbits GJ 357 and was reported in 2019 and was detected with the Transit method.
Published measurements list a radius of 1.2 Earth radii, a mass of 1.87 Earth masses (estimated), an orbital period of 3.93 days, and an equilibrium temperature near 518 K.
Catalog data places the system at about 9.4 parsecs from Earth, a host star classified as M2.5 V, and 3 known planets in the system.
Host star
Explore the stellar record for this system to compare temperature, spectral type, and known planets.
Open GJ 357